Although I always deeply appreciate and admire Gilly's replies, I have to thank (as usual) M.B. Doc for his reply on this matter.

Tropical weather is indeed fatal on many things in this part of the world. At one point in the morning it could be sunny, 86°F and 40 % humid. In the next 15 minutes it could be raining, 72°F and 100% humidity. Then, by the next hour it could be back to the original pattern.

I really don't believe any oil can stand ETERNAL proper viscosity and protection.

In fact, the local M. B. dealer recommends engine oil changes at 5,000 kms. with regular oil and at 10,000 kms. with fully synthetic.

__________________
A. Rosich
CL 500, 1998
S 500 L, 1998
E 320 T, 1995 [Sadly sold ]